He does not do the thing with holding onto a mispronunciation. One thing he does do a little of is lose his place. He will very quickly read much of a long sentence, pause, and repeat a couple of words--I think while he scans ahead. "Corduroy was a bear who was involved in covert secret ops missions in department stores under top-secret government mandate, but feared being caught by special forces--so one night, when he...when he unexpectedly came upon a CIA agent, he..."
(uh, not an actual excerpt)
